David's Astronomy Pages
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 Images (S360) |
 Images Sessions |
Home Page |
 Images (S362) |
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Objects Session Notes
NGC 6819 - Open Cluster Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- CI Cyg (mira variables)}
- attempts at BL Lac, S Cyg (failed - poor sky transparency/cloud)
- Morning Session (2.5 hrs), - Operated at Observatory - Ambient Temperature 1 deg C, then rising to 3 deg C
Thin cloud blocking Southern Sky, cloud developing by dawn- CCD operation -25 degC (at 63% average cooling). - main objective of the session was to perform further fine tuning of the telescope system. In the event this comprised collimation checks.
Attempts to check Backlash using PEMPro 2.6 failed. Calibration attempts were foiled by cloud in southern sky- secondary objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity taken to acquire flat frames in C, BVR & U filters using Dawn Sky - - Notes from 2009-04-05
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NGC 6819 (Cygnus) |
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CCD Image (53% size reduction) 3 x 5s (average combine), 3x3 binning, C Filter 2009-04-05 03:01 h UT (#361004-06) 12" LX200R (at f/5.7) + ST-10XME |
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NGC 6819 - detail |
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CCD Image (cropped to central area) Image details as above |
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2x2 binning |
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CCD Image (cropped to central area) 2 x 20s (average combine), 2x2 binning, C Filter 2009-04-05 03:03 h UT (#361008-10) 12" LX200R (at f/5.7) + ST-10XME |
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1x1 binning |
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CCD Image (cropped to central area) 5 x 10s (average combine), 1x1 binning, C Filter 2009-04-05 03:06 h UT (#361012-16) 12" LX200R (at f/5.7) + ST-10XME |
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1x1 binning |
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Negative CCD Image (cropped to central area) Image details as above |
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Images collected for Astrometric Monitoring
of Nearby Stars Project
Images collected for Photometric Monitoring of Variable Stars
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| This Web Page: | CCD Images - Session 361 (2009-04-05) |
| Last Updated : | 2023-11-19 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
